Home / 15,440.21-21,307.46-8,366.63

Finding the Fourth Proportional to 15,440.21, 21,307.46 and 8,366.63

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Solution

The fourth proportional to 15,440.21, 21,307.46 and 8,366.63 is: 11,545.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.21 : 21,307.46 = 8,366.63 : x
  2. Step 2: Convert to fraction form
    15,440.21/21,307.46 = 8,366.63/x
  3. Step 3: Cross multiply
    15,440.21x = 21,307.46 × 8,366.63
  4. Step 4: Simplify right side
    15,440.21x = 178,271,485.69
  5. Step 5: Solve for x
    x = 178,271,485.69/15,440.21
  6. Step 6: Final answer
    x = 11,545.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.